-120=-3(7n+4)+3n

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Solution for -120=-3(7n+4)+3n equation:


Simplifying
-120 = -3(7n + 4) + 3n

Reorder the terms:
-120 = -3(4 + 7n) + 3n
-120 = (4 * -3 + 7n * -3) + 3n
-120 = (-12 + -21n) + 3n

Combine like terms: -21n + 3n = -18n
-120 = -12 + -18n

Solving
-120 = -12 + -18n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '18n' to each side of the equation.
-120 + 18n = -12 + -18n + 18n

Combine like terms: -18n + 18n = 0
-120 + 18n = -12 + 0
-120 + 18n = -12

Add '120' to each side of the equation.
-120 + 120 + 18n = -12 + 120

Combine like terms: -120 + 120 = 0
0 + 18n = -12 + 120
18n = -12 + 120

Combine like terms: -12 + 120 = 108
18n = 108

Divide each side by '18'.
n = 6

Simplifying
n = 6

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